github.com/blend/go-sdk@v1.20240719.1/web/middleware.go (about)

     1  /*
     2  
     3  Copyright (c) 2024 - Present. Blend Labs, Inc. All rights reserved
     4  Use of this source code is governed by a MIT license that can be found in the LICENSE file.
     5  
     6  */
     7  
     8  package web
     9  
    10  // Middleware is a func that implements middleware
    11  type Middleware func(Action) Action
    12  
    13  // NestMiddleware reads the middleware variadic args and organizes the calls
    14  // recursively in the order they appear. I.e. NestMiddleware(inner, third,
    15  // second, first) will call "first", "second", "third", then "inner".
    16  func NestMiddleware(action Action, middleware ...Middleware) Action {
    17  	if len(middleware) == 0 {
    18  		return action
    19  	}
    20  
    21  	a := action
    22  	for _, i := range middleware {
    23  		if i != nil {
    24  			a = i(a)
    25  		}
    26  	}
    27  	return a
    28  }